First 2 Upgrades

It didn't take long to get the first 2 upgrades. In order to use Birdflow on your own Twitter account, you must add a credit card to initiate a 7-day trial. The biggest reason for doing this is Twitter charges for their API on a per-account basis. I think the conversion from trial to paid should be high though, since it is very clear what the user gets before they add their card. They can see a live demo on the Birdflow Twitter account, and experiment with setting one up before the trial begins.